The fire broke out around 1 am in a COVID ward on its ground floor, fire officer said.
At least 18 coronavirus patients died after a fire broke out at a hospital in Gujarat's Bharuch in the early hours on Saturday.
Gut-wrenching visuals of the tragedy showed remains of some patients on stretchers and beds.
There were around 50 other patients at the four- storeyed Welfare Hospital when the fire broke out in the COVID-19 ward at 1 am. They were rescued by locals and firefighters, an official said.
"As per information at 6.30 am, the death count in the tragedy stood at 18. Immediately after the fire, we had confirmation of 12 deaths," a police official told PTI.
The 12 patients in the COVID-19 ward died due to the fire and resultant smoke, a senior police officer in Bharuch, Rajendrasinh Chudasama, said.
It is not clear if the remaining six also died in the Welfare Hospital or while being shifted to other hospitals.
The COVID-19 designated hospital is situated on the Bharuch-Jambusar highway, around 190 km from Ahmedabad and is being run by a trust.
The cause of the fire is yet to be ascertained, the official said.
The fire was controlled within an hour and around 50 patients were rescued by locals as well as firefighters, a fire official said. They were shifted to nearby hospitals, he added.